Seawater desalination process with low cost

Abstract

The invention relates to a seawater desalination process with low cost, which utilizes the condensate of the vapor cycle of a thermal power plant or a nuclear power station as a heat source, heats seawater to the temperature of 60-80 DEG C and atomizes the seawater in an atomizing chamber. On the other hand, natural air is heated after being washed and humidified, enters the atomizing chamber and contacts the atomized high-temperature seawater mist flow so as to enable part of the atomized high-temperature seawater mist flow to be instantaneously vaporized; fresh water mist droplets generated by the atomization of the high-temperature seawater are lifted by the kinetic energy of air to move upwards; moreover, because the density of water is different from the density of salt, the water and the salt are separated in the movement process; the two blasts of fresh water airflow are cooled by the raw material of cold seawater simultaneously and condensed into fresh water, the heated raw material of the cold seawater is used for washing and humidifying the natural air, and clean air carrying water vapor is recycled after the clean air carrying the water vapor is cooled; and the entire process flow does not consume extra heat energy and only consumes the air and less electric energy required by the transportation of the seawater. The process recovers energy in the condensate of the vapor cycle of the thermal power plant or the nuclear power station, produces the fresh water in large amounts and also produces a by-product of concentrated seawater.

Description

field of invention [0001] The invention relates to seawater desalination technology. Background technique [0002] The world's two major environmental problems, the first is global warming, and the second is the water crisis. Regarding the first article, people have launched substantive actions to reduce greenhouse gas emissions and heat pollution; for the second article, people are also aware of the seriousness of the problem, "the world's future war for resources will be triggered by water" , "After the energy crisis, the next crisis will be the turn of the water crisis" and other statements are by no means alarmist. In this situation, seawater desalination technology has been paid more and more attention by people, especially the seawater desalination technology with low energy consumption and heat pollution reduction is the focus of research and development. At present, the most mature technologies at home and abroad are multi-stage flash distillation (MSF) and reverse...

AI Technical Summary

Problems solved by technology

At present, the most mature technologies at home and abroad are multi-stage flash distillation (MSF) and reverse osmosis (RO), which occupy most of the market share, but these two methods have high energy consumption or production costs, because MSF In addition to the heat source, the vacuum method requires vacuum equipment, while the RO method requires pressurized equipment, which consumes a lot of power.

Images